Stocks to Watch: HPQ, KYAK, GES & More

Check out which companies are making headlines after the bell Wednesday:

Hewlett-Packard - The Dow component posted earnings of $1 a share, excluding one-time items, edging past expectationsfor 98 cents a share. But revenue was lighter than expected at $29.7 billion, missing estimates for $31.10 billion. The company also handed in full-year earnings guidance that was in the lower-range of expectations. On its conference call, Hewlett said macro conditions are more challenging than it saw two months ago and that currency would be a headwind in Q4. Shares initially gained in volatile after-hours trading before turning negative. (Click here for extended-hours quote.)

Facebook - The social-networking giant's co-founder Dustin Moskovitz sold 450,000 shares of the companyin the last few days for about $9 million. He still owns more than 133 million shares. The news comes after billionaire investor Peter Thiel unloaded the majority of his remaining Facebook sharesearlier this week. (Click here for extended-hours quote.)

Kayak - The online travel company posted earnings of 19 cents, missing expectations for 24 cents a share, in its first quarterly releasesince going public at the end of July. Excluding one-time items, the firm earned 22 cents a share.

But the company posted revenue of $77 million, edging past projections for $75 million. Shares fell after hours in thin trading. (Click here for extended-hours quote.)

Guess - The apparel retailer posted earnings of 49 cents a share, slightly below estimates for 50 cents a share. Meanwhile, the company reported sales of $635 million, topping expectations for $630 million. The company also lowered its guidance for the rest of the year, sending shares sharply lower in after-hours trading. (Click here for extended-hours quote.)

Ulta Salon - The company named Bruce Hartman as its new CFO. Hartman will succeed Gregg Bodnar, who has held the role of CFO since 2006. Shares slipped in extended-hours trading. (Click here for extended-hours quote.)